Section 3: Hp-67/Hp-97 Compatability; Reading Hp-67/Hp-97 Program Cards - HP 82104A Owner's Handbook Manual

Section 3
HP-67/HP-97 Compatibility
The card reader system has been designed so that most prerecorded
HP-67/HP-97 programs and programs recorded on cards by HP-67/
HP-97 calculators can be read and executed on the HP-41C. All HP-67/
HP-97 data cards can be read and used on the HP-41C system.
The card reader actually translates the HP-67/HP-97 program instruc-
tions into special compatability functions that execute in the HP-41C.
You can also key in and use the compatibility functions while the card
reader is plugged into the HP-41C. A complete listing of all HP 82104A
functions is given in the function index at the end of this handbook.
Note: Some HP-67/HP-97 programs may require an
additional HP 82106A Memory Module or an HP
82170A Quad Memory Module before translation and
execution can be performed (except for the HP-41CV,
which already contains sufficient memory to accom-
modate all HP-67/HP97 programs).
Reading HP-67/HP-97 Program Cards
The HP-41C and card reader will read either pre-recorded HP-67/HP-97
program cards or program cards that were written by the HP-67 or HP-97
calculators. There are, however, some important exceptions and con-
siderations that are covered later in this section.
To read a HP-67/HP-97 program card:
1. Set the HP-41C to USER mode.
2. Execute 026 to provide 26 registers (R, through R,;) for
HP-67/HP-97 compatibility. (Skip this step if 26 or more registers
are already allocated.)
3. Press @@ (-J(]J. This ensures that your last program
has an £/V0O instruction and causes the program that is read
to be placed after your last program. (If the last program does
not have an £/VD instruction, it will be replaced by the new
program.)
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